How to test the connection to a db2 database

问题

I need to test the connection to a db2 database.

With oracle databases I'd execute a 'select * from dual' in order to do this.

But dual is specific for oracle. Is there a similar canonical test sql statement for db2?

回答1:

SELECT 1 FROM SYSIBM.SYSDUMMY1

cheaper then

SELECT CURRENT SQLID FROM SYSIBM.SYSDUMMY1

回答2:

I ended up using

SELECT CURRENT SQLID FROM SYSIBM.SYSDUMMY1

which seems to work nice.

回答3:

LIST DB DIRECTORY

or

LIST TABLES

来源：https://stackoverflow.com/questions/4733356/how-to-test-the-connection-to-a-db2-database